we certainly saw a swing just a couple months ago when sandy came in, superstorm sandy. it wasn't technically a hurricane when it hit shore. talk about sandy a little bit. what happened. what came together and whether something like that is likely to happen again soon. >> that $70 billion storm exceeded even the 100-year projection of new york city and one of the reasons is the caribbean is four degrees warmer than normal and that's the energy that drives hurricane warm water. because the caribbean is hotter than normal and collides with cold air coming in from canada that's what drove the energy that devastated much of the northeast. >> when you look forward to next year in your crystal ball of weather, what do you see? >> no one can predict the future, but we're going to experience more swings more wacky weather, more 100-year storms perhaps. get used to it. it's the new normal. >> is there one type of weather that becomes the more extreme or is it that everything is affected. >> everything is affected. there's two large masses one from canada warm air coming in from t